Catch ConfigError in register()

i3pystatus/core/__init__.py

@@ -2,6 +2,7 @@
 import sys
 import os
 from threading import Thread
+from i3pystatus.core.exceptions import ConfigError
 
 from i3pystatus.core.imputil import ClassFinder
 from i3pystatus.core import io, util
@@ -54,6 +55,7 @@ class Status:
 
     def register(self, module, *args, **kwargs):
         """Register a new module."""
+        from i3pystatus.text import Text
 
         if module:
             try:
@@ -61,7 +63,6 @@ class Status:
             except ImportError as import_error:
                 if import_error.name and not import_error.path and isinstance(module, str):
                     # This is a package/module not found exception raised by importing a module on-the-fly
-                    from i3pystatus.text import Text
                     return self.modules.append(Text(
                         color="#FF0000",
                         text="{i3py_mod}: Missing Python module '{missing_module}'".format(
@@ -69,6 +70,10 @@ class Status:
                             missing_module=import_error.name)))
                 else:
                     raise import_error
+            except ConfigError as configuration_error:
+                return self.modules.append(Text(
+                        color="#FF0000",
+                        text=configuration_error.message))
         else:
             return None
 

i3pystatus/core/exceptions.py

@@ -3,10 +3,10 @@ class ConfigError(Exception):
     """ABC for configuration exceptions"""
 
     def __init__(self, module, *args, **kwargs):
-        message = "Module '{0}': {1}".format(
+        self.message = "Module '{0}': {1}".format(
             module, self.format(*args, **kwargs))
 
-        super().__init__(message)
+        super().__init__(self.message)
 
     def format(self, *args, **kwargs):
         return ""